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Bosch DIVAR network 3000 (DDN-3532)
32-channel desktop NVR — 16 PoE+ ports (115 W), 12 MP support
SPECIFICATIONS · DIVAR NETWORK 3000 (DDN-3532)
Full specifications
Specifications sourced from official manufacturer datasheet (link in hero).
About the Bosch DIVAR network 3000 (DDN-3532)
The Bosch DIVAR network 3000 (DDN-3532) is a pro-class recorder for installs that have outgrown a single 16-channel unit but do not yet justify dedicated rack-cabinet hardware — multi-floor offices, retail flagships, factory cells, light-industrial yards. Built-in HDD capacity is intentionally lean; the unit is meant to be paired with a NAS, cloud archive, or sister recorder when retention beyond ~14 days at full bitrate is mandated. The desktop chassis sits on a shelf, IT bench or wall-mount tray and runs cool enough that ventilation is not a serious design constraint. Partial built-in PoE (16 ports for 32 channels) handles the closest cameras directly and pushes the remainder onto an external PoE switch. This split is common when the NVR sits near a cluster of cameras and the far cameras are reached through a switch in another room or floor.
Best use cases for this recorder
Multi-floor office, flagship retail, factory cell
32 channels absorb the per-floor camera count of a 3-5 story building, a retail flagship with stockroom and yard, or a factory cell with overhead and process cameras — without forcing a second unit on day one.
4K/8MP camera deployments
Native support for 12 MP per-channel recording matches it to current-generation 4K cameras — useful when the install plan calls for fewer-but-higher-resolution cameras (typical of perimeter, parking, and identification-focused layouts).
Strengths
- •32-channel headroom absorbs phased expansion without forcing a second chassis
- •16 built-in PoE ports eliminate the need for an external switch on small installs
- •H.265 codec roughly halves storage cost over legacy H.264 installs
- •ONVIF compliance lets the unit record from third-party cameras, not just the same-brand catalog
- •320 Mbps ingest bandwidth supports the unit at full channel count at 4K resolution
Considerations
- •No RAID support — single-disk failure means losing all footage on that disk; plan retention policy accordingly
Storage planning
Running all 32 channels at the industry-typical 4 Mbps/channel H.265 CBR (15 fps, 4 MP scene complexity), the DIVAR network 3000 (DDN-3532) produces roughly 1350 GB of footage per day — about 9450 GB/week, 40500 GB/month, and 121500 GB across a 90-day retention window. Fully populated with 2× 6 TB drives the unit holds 12 TB raw — enough for roughly 0.3× the one-month archive at full bitrate before RAID overhead. These figures are deterministic — derived from your bitrate assumption, the channel count, and the calendar — not estimated from a marketing data sheet.
Estimates assume 4 Mbps per channel H.265 CBR continuous recording. Motion-only recording typically reduces storage by 40-70%.
Bandwidth headroom
Input (ingest)
Avg 10.0 Mbps per channel — enough for 4K H.265 at 4 Mbps/channel.
Installation tips for the DIVAR network 3000 (DDN-3532)
Locate on a shelf in a ventilated, lockable cupboard — desktop units pull dust through the chassis quickly when sat on a carpeted floor, and the HDDs need ambient temperatures under 30 °C for rated life.
Plan storage at roughly 1350 GB/day (≈40500 GB/month) for continuous H.265 recording at 4 Mbps/channel — match HDD capacity to the longest retention window the privacy policy or insurance contract demands.
Distribute high-power cameras (PTZ, heated housings) across the 16 built-in PoE ports — concentrating them on a single port group can exceed the per-port PoE budget even when the chassis total has headroom.
Place the recorder on a dedicated VLAN with the cameras — separating CCTV traffic from office VLANs avoids broadcast storms degrading recording quality during busy network hours.
Power & rack
Power draw sits at roughly 40 W idle and around 138 W under full load (2-bay HDD activity plus 115 W of PoE delivered to cameras). That dissipates approximately 471 BTU/hour of heat into the rack — size the comms-cabinet ventilation accordingly. On desktop placement, raise the unit on rubber feet or a vented tray rather than directly on carpet — the chassis pulls cooling air through bottom intakes and dust ingress is the primary cause of premature HDD failure.
Installer time & cost (rough estimate)
A typical EU integrator quotes 7-9 h of labour to commission the Bosch DIVAR network 3000 (DDN-3532) (approximately €315-€405 excluding hardware), broken down as physical install, HDD population, 32-channel discovery and IP/credential configuration, schedule + retention setup, motion / event rules per camera, mobile-app pairing, and a brief operator handover. Allow extra time for sites with non-standard network topology (multi-VLAN, multi-site bridges) or for migrations from a legacy DVR where camera streams must be re-addressed.
Indicative EU 2024-2025 pricing — actual quotes vary by region, network topology and migration scope. Excludes hardware, HDDs, transport, permits, and VAT.
Frequently asked questions
How many cameras can the Bosch DIVAR network 3000 (DDN-3532) record?
Up to 32 IP camera channels per chassis. Total ingest bandwidth is 320 Mbps, which sets the practical ceiling — running every channel at 4K (typically 8 Mbps each) requires 256 Mbps, so verify whether your camera plan fits inside the bandwidth budget.
Does the Bosch DIVAR network 3000 (DDN-3532) support third-party (ONVIF) cameras?
Yes — ONVIF Profile S/T support means the unit records from third-party cameras as well as the same-brand catalog. Most cameras supporting ONVIF 16.12 or newer plug-and-play; older firmware may require manual stream URL configuration in the NVR web UI.
How much storage does the Bosch DIVAR network 3000 (DDN-3532) need for 30-day recording?
At the industry-typical 4 Mbps per channel H.265 CBR (15 fps, 4 MP scene), all 32 channels recording continuously for 30 days produces approximately 40500 GB (39.6 TB) of footage. Motion-only or event-triggered recording typically cuts that by 40-70 % depending on scene activity. Plan HDD capacity for the longest retention window your privacy policy or insurance contract demands.
What HDDs are recommended for the Bosch DIVAR network 3000 (DDN-3532)?
Use surveillance-rated HDDs — WD Purple, Seagate SkyHawk, Toshiba S300, or equivalent. Desktop / consumer drives (WD Blue, Seagate Barracuda) are not validated for 24/7 write workloads and typically fail within 12-18 months in CCTV use. Max 6 TB per bay across 2 bays = up to 12 TB raw capacity; populate matched pairs/sets if planning RAID.
Does the Bosch DIVAR network 3000 (DDN-3532) need its own PoE switch?
Not on small installs — 16 built-in PoE ports power and connect cameras directly to the recorder. On larger sites a dedicated managed PoE switch is still the cleaner architecture: separate failure domain, larger PoE budget, easier replacement.
What power and cooling does the Bosch DIVAR network 3000 (DDN-3532) need?
Plan for 40 W idle and ~138 W under full load, dissipating roughly 471 BTU/hour into the rack or cupboard. Size the UPS for at least 15-minute hold-up so the unit can flush write buffers and shut down cleanly on mains failure — abrupt power loss is the leading cause of NVR file-system corruption in commercial installs.
Is the Bosch DIVAR network 3000 (DDN-3532) suitable for evidentiary recording?
Depends on the retention and chain-of-custody policy. The 2-bay chassis supports basic mirroring on the install side, but lacks declared RAID 5/6 parity — verify with the vendor whether RAID is supported in newer firmware On the export side, ensure footage is hashed and timestamped before transfer to investigators.
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Helpful Tools & Resources
Storage Calculator
Match HDD capacity to your retention policy
Bandwidth Calculator
Verify your network can carry the ingest load
Camera Quantity Calculator
Match channel count to your site
UPS Sizing Calculator
Hold-up time for clean NVR shutdown on mains failure
System Budget Estimator
Hardware + install + commissioning cost
CCTV Storage Planning Guide
Bitrate, retention, RAID — the full math
Plan your CCTV layout with Bosch DIVAR network 3000 (DDN-3532)
Use our free CCTV planner to lay out cameras feeding this recorder, match HDD capacity to retention windows, and generate a professional PDF report — no signup required.
Free until you outgrow it · No card · No install